Home / 2,009.81-2,772.60-1,224.32

Finding the Fourth Proportional to 2,009.81, 2,772.60 and 1,224.32

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Solution

The fourth proportional to 2,009.81, 2,772.60 and 1,224.32 is: 1,688.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,009.81 : 2,772.60 = 1,224.32 : x
  2. Step 2: Convert to fraction form
    2,009.81/2,772.60 = 1,224.32/x
  3. Step 3: Cross multiply
    2,009.81x = 2,772.60 × 1,224.32
  4. Step 4: Simplify right side
    2,009.81x = 3,394,535.77
  5. Step 5: Solve for x
    x = 3,394,535.77/2,009.81
  6. Step 6: Final answer
    x = 1,688.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.